Crank hemstitch-embroidering machine.



1). NOBLE. v

GRANKHE MSTITGH EMBROIDEBING MACHINE.

APPLIOATION FILED NOV 27,1909. I

Patented Apr.'15, 1913.v

ATTORNEY D. NOBLE. v CRANK HEMSTITGH BMBROIDERING MACHINE.

APPLICATION IILEDNOV. 27, 1909,

Patented Apr. 15,1913.

4.8HEET8-SHEET 3.

w/mssm ATTORNEY D. NOBLE. CRANK HEMSTITCH EMBROIDERING MACHINE.APPLIOATION IILED NOV. 27, 1909.

4 SHEETS-SHEET 4.

1,058,892. I Patented Apr. 15,1913.

veniently manipulated.

UNITED sTAr s PATENT oEEIoE.

DONALD NOBLE, or BRIDGEPQET,CO NECTICUT; AssreNon '10 TI-IE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY. l

I CRANK HEMSTITCI-I-EMBROIDERING MACHINE.

Specification of Letters Patent. I Patnted Apr.-15, 1913- ApplicationfiieddNovember 27, 1909. 'sria uo. 530,141.

. and State of Connecticut, have invented certain new and usefulImprovements in Crank Hemstitch-Embroidering Machines, of which thefollowing 1s a specification, referencebeing .had therein to theaccompany-' ing drawings.-

T h1s invention relates to improvements 1n what are commerclally termedcrank hemstitch embroidering machines, wherein the material is fedindifferent directions by means of feeding mechanism operativelyconnected with a manually controlled crank which is mounted so that itmaybe con- In the operation of machines of the character herein referredto, it is desirable when directing a seam'at ,an angle to the one pro-'viously formedto suspend the forward feed of the material while manuallyZIClJUSiZIIIg said material to its position for; the commencement of thenewly directed seam and if, as is herein pointed out, the mach ne isbrought to rest between the successivehemstitch figures, stitches willbe placed in a circular form betweenthe last feed movement of thefinished seam andthe first feed movement of the seam next tobe made.

'The invention is herein shown and described in connection with so muchof a crank hemstitch embroidering machine as is deemed necessary for anunderstanding of its practical application.

F or details inconstruction of the variety of machine shown inconnection with the present invention see U. S. Patent No.

1,033,055, dated July 16, 1912, to D. Noble.

Referring to the accompanying drawings, in the several figures of whichlike parts are similarly designated, Figure 1 is a view in front sideelevation of the improved mechanism, together with so much of theembroidering machine as is deemed essential for an understanding of theinvention, certain of the elements being shown in section and others infull lies for convenience of reference. Fig. 2 is a .rear side elevationof Fig. 1, except that a portion of thestopmotion mechanism has beenremoved to better illustrate the operative relationship of the latterand the means for suspending-the forward feed of the material betweenthe successive hemstitc'h figures. enlarged view of the stop-motionplunger and the connections for connecting itwith Fig. 3 is an itsoperating cam. Fig. 4 is a detail perspective 'view, partially insection, of the feed lever and parts carried thereby. Figs. 5 and 6 areviews of the front and rear faces, respectively, of the feed cam, thelatter figure including the gear for connecting said cam with .the crankor main shaft of the embroidering machine. Fig. 7 is a rear sideface'view of the cam provided with the cam section for controlling themovements of the stop motion plunger, said cam being mounted at the rearof and upon the same shaft. as the feed cam. I

1 is the bed plate 'of the sewing machine,-

Q'the overhanging arm, 3 the arm standard,

4 the hand crank for controlling the direction of the feedof thematerial, and 5 the commonly employed rotating cylinder providcd withthe vertically movable feed ring 6.which, at predetermined intervals,acts upon the beveled portion 7 of the rock lever 8 to advance thematerial in agiven line of feed, as in the device of the previously referred to'application. i 9 represents the feed cam which isprovided withthe camgroove 10 having the cam section 11, said cam being secured uponthe rotary shaft 12 which, in turn, is mounted in suitable bearingsformed in the -o\"erhanging arm and operatively connected with tlie-actuating mechanism of thesewing machine to make one rotation-to everythree rotations of the main or crank shaft 13, as

is necessary in forming the hemstitch figure.

11 is ashaft mounted to rock in suitable bearings formed in theoverhanging arm, and upon the forward end of said'shaft is mounted thefeed cam lever 15 constructed with .1 boss 16 in which is looselymounted a .roller' stud 17 provided at its inner end as topermit thepinch screw 21 to tighten it,

upon the shaft '14 when adjusted to secure the lever 20. The outer endof the lever 20 carries a roller stud 24 upon which is mount .figure,the cam disk 27 ed a roller 25 (shown in dotted lines only) which entersa grooveQti formed in the feed ring 6, thus causing said ring to actupon the lever 8 whenever the roller 18 is acted upon by the cam section11 of the cam groove 10.

The stop-motion mechanism herein eurployed is of ordinary construction,comprising the means shown and described in the previously referred topending application; and is substantially the same as the stop mechanismrepresented by United States patent to D. Noble No. 650,853, datedAugust 28, 1900, accordingly, only such reference will be made theretoas is deemed necessary to show its control of the means for suspendingthe'action of the machine between the successive hemstitch figures. Theshaft 12 carries at its rear end a cam disk 27 and is operativelyconnected, through the gear 28 carried by the cam t) meshing with thegear 29, with the crank shaft 1 said gears being of the ratio of threeto one and thus transmitting one rotation to the cams 9 and- 27 to threerotations of said crank shaft; i

To prevent the operator from arresting the action of the stitchforniingmechanism except at the completion of the hemstitch is provided with acam portion 30 which coacts with a roller '31 mounted upon the free endof a connection 32 which is pivoted to oscillate on the screw 33, theopposite end of said conned.

tion being ointed to an L-shaped lever 34 pivoted at 375 to a bracket 36which, in turn, is-secured by screws 37, 37 to the arm standard.

The L-shaped lever 34 is pivoted to a plunger 38 which is mounted in asuitable bearing formed in the arm standard, the free end of saidplunger normally extending out slightly beyond said standard.

39 is a spring, one end of which is attached to the overhanging arm, theopposite end being secured to the connection 32, thus holding the freeend of the plunger 38 in its outward position except when the roller 31is acted upon by the cam portion 30, at which time the free end ofsaid-plunger drawn within its bearing.

40 represents the hand or band wheel which .is loosely mounted upon thecrank shaft 13, 41 the brake disk suitably secured to said shaft, and 42and 43 the commonly employed coacting toothed disks for releasing theband wheel from driving relationship with the shaft 13 whenever it isdesired to arrest the action of the machine. The disk 43 is providedwith an arm it which is pivotally connected with a brake lever 4K5. Thelever 45 carries at its lower end a follower 46 which tracks in a groove4:7 formed in the shipper lever 48 pivoted by screw a stop lever 56which. in connection with.

the plunger 38, arts to prevent the stopmotion mechanism fr m arrestingt'hcaction of the machine except at the completioi'i o a hemstitchfigure, as will later be explained.

57 is a spring secured at one end to the arm standard. its opposite endbeing attachcd to the lever 48, saidspring, through the connectionspreviously pointed out, acting to hold the brake shoe 50 in contact withthe cam portion 57 formed on the periphery of the brake disk 4-1; Suchadjustment of the parts -il-S and 50 causes the follower 4G to bepositioned in the lower end of the slot 417 and the free end of thelever 48 in opposition to the spring 57,

which positions the follower 46 in the upper end of the slot t7, thebrake shoe 50 out of engagement with the brake disk 4-1, the lever 50with its free end below the plunger 33 and the well understood drivingelements into operative relationship for effecting transmission of powerfrom the belt. driven pulley to the crank or main shaft 13. When itisdesired to reverse the action of the stopmotion mechanism to stop themachine, the operator permits the spring 57 to control the rockingmovements of the lever 4-8 which causes the latter to position the endof the lever 7) in contact with the plunger 38, where it is held untilthe connection 32, through the action of the cam portion 30.

withdraws said plunger and permits said spring. through the lever 48, toadjust the driving elements out of driving relationship with said beltpulley, and the brake shoe 50 in contact with the cam portion 57.

Having referred to so much of the common mechanism as is deemedimportant, the improved means for automatically arresting the action ofthe feeding mechanism between the successive hems t-itch figures willnow be described.

In the present development of the invention; the arm plate 58 isprovided with the,

tubular bearing 59 into which is mounted a rock shaft 60. provided atits opposite ends with complementalcrank arms 61 and 62,-

rock. shaft- 65 which is mounted in a tubular bearing formed in thebracket 66 secured byv screws 67, 67 to the covdrplate68. The'rock shaft65 is provided at its outer end with. a forked lever 69 which, at times,act's upon the head 70 of the plunger 17 to withdraw" the roller 18 fromthe cam groove 10 formed inthe'cam 9, in opposition to the spring 19.

In a suitable bearing formed in the-forward end of the lever 48, andatone side of theslot 47, issecured, by a nut 71', an os-.c1llating-bracket72 into which is threadeda tubular bushing 73.

The bushing 73, which-is held in the desired'adjustment' by .a nut 7t,acts to'guide the lower end of a conne'ction 75 depending from the crankarm 62 and, at--. times, moves said connection in the direction of'itslength by contacting with its enlarged portion 76.

\Y-lien in theoperation of the machine the stitching of-the, sea na-hasbeen completed,

-- and his desired'tojdirect the feed of the material at anfanglej'tosuch seam, the manual, control of power transmission 1s. discon- .tinuedand the spring 57 permitted to move the lever 48'so as to position thefree end of the stop lever 56 in contact with the plungen 38, in whichadjustment the parts remainuntil released by the withdrawal of saidplunger, such adjustment of the plunger takingplace when the cam portion57' occupies a position. substantially --opposite ,to' that shown inFig. 1, the brake disk continuing its. rotation until the said cam'por-' 'tion coacts with the brake shoe 50 to arrest the action of themachine.

Immediately upon the withdrawal of the' plunger 38, and before themachine has been brought to rest, the movementof, the lever 48, through"the connections previously pointed out, causes the forked lever 69 ,to

with-the cam groove 10. Such disengagement of the cam roller from thecam groove occurs at substantially the time when said roller is about toenter the cam section 11, so

- that during the continued rotation' ofthe cam portion 57 from theposition which it occupies-when the plunger 38 is withdrawn, to itsposition in contact with the brake shoe 50, the cam disk 9 is advancedby the momentum of the machine sufiiciently'to hung the roller 18 inalinement with the surface 7 7 forming the outer guide wall of the camsection 11, and as the stop-motion mechanism is again manuallymanipulated to start the rnachine, the forked lever 69 ls'caused-torelease its controlof the plunger 17, thus permitting the roller 18 t-oride the surface 7 7 until it is again positionedby the spring 19 in thecam groove 10.

, From the foregoing it will be understood that when the action of thestitch forming and cloth-feeding mechanism is interrupted by thejaction,of the stop-'motion mechanism, the roller 18 'isplac ed out ofengagementwith the cam section 11, of the cam groove 10 and retained insuch-position until after said cam section has-'passed'beyond the fieldof engagement with said roller, so that when the machine is againstarted, .the formation of a hemstitch figureis repeated withoutbringing the feeding mechanism into action, and. the manual turning ofthe material at such time causes the stitches first formed afterstartingthe machine to beplaced about a given Such manipulation of thestop-motion mechanism to arrest the action 80, gear 81, hand crank shaft82 and bracket as such elements are important only in COD."-

nection with illustrating suihcient of the mechanism of a crankhemstitchembroidering machine to demonstrate the application of the invention. a

Claims:

- 1. In a crank-hemstitch embroidering machine' including a stopmechanism for arresting the action of said machine, a stitch-formingmechanism, a cloth-feeding mechanism including a cam-follower andconnections between. the latter and said stop mechanism for render-inand allow said stitch-forming mechanism to be operated; until arrestedby said stop mechanism. 2. In a crank-hemstitch embroidering machineincluding a stop mechanism for arresting the action of said machine, astitchform-ing mechanism and a cloth feeding mechanism, the lattercomprising a feedcam, a cam-follower and feed connections fortransmitting feediinovements to the fabric being acted on, andconnections between said stop mechanism a 'id said cam-follower fordiscontinuing the ffective action of said feed-cam and allow saidstitch-forming mechanism to be oper ted until arrested by said stopmechanism.

nisni, and conne tionsbetween'the latter and,

machine/includin a crank-shaft, to move said-,el'ement-out 0 contactwith its coactmg )rr6mber to discontinue the feeding operation saidcam-follower ineffective of themachine can be repeated any desired 4' 83have not been specifically defined herein,

an elementpf the feeding mechanism of said and allow thestitcli-tormingmechanism to be operated independently of the feed until said stopmechanism finally arrests theactionjof said machine.

forming mechanism to be operated until arQ rested by'said stopmechanism.

5. In a craiikhemst-itch embroidering niacliine including a stopmechanism for arresting the action of said machine, a manually operateddeviceto control said stop mechanism, and connections between the latterand an element of the feeding mechanism of said machine, including anoscillating member carried by said stop mechanism and a rockshaftmounted upon. a stationary part of said'inachine, to move said elementout of contact with its coacting member to discontinue the feedingoperation and allow the stitch-forming mechanism to. be operatedindependently of the feed until said'stop mechanism finally arrests theaction of said machine,

(3. In a crank hemstitch embroidering thacliine, including a stopmechanism for arresting the action of said machine, a manually operateddevice to control. said stop mechanism, and connections between thelatter and a yieldingly mounted element of the feeding mechanism of saidmachine, including an oscillating member carriedby said' stop mechanismand rock-shafts mounted upon a stationary part of said machine, to movesa d element out of contact with its coacting member to discontinue thefeeding operation andv allow the stitclrforming mechanism to be operatedindc iendently of the feed until said stop mechanism finally arrests theaction of said machine.

'7.- ln an emb'roidering machine, the combination witlia hand-crankfeed-directing mechanism, a stop mechanism for arresting the action ofthe machine, a stitch-forming mechanism, a cloth-feeding mechanism andconnections between the latter andsaid stop vmechanism for renderingsaid feeding mechanism ineffective and permit said stitchformingmechanism to superpose the stitches atthe will of the operator. y

In testimony whereof, .I have signed my name to this specification, inthe presence of two subscribing witnesses.

DONALD NOBLE. \Vitnesses:

Annie M. DONUIEE. -WI! r mu A Fnixaeax.

